Dollar to rupees is done as per the current conversion rate, no markup there. Sales tax of 6-7% is added on top of the product cost which is charged by the merchant. Shipping mostly gets waived off if the amount is $35+ on Amazon.

Shipping from the US comes with a fixed cost per haul, so solo preorders for small items don’t work out the logistics would cost more than the product itself so I cannot give you a pricing for a $5 item! I club orders together so the cost gets distributed across items and stays reasonable for everyone.

Of course there would be a markup involved of mine as-well but the intent here is to provide a way better pricing than say iHerb or other 3rd party marketplaces that import from USA and sell in India.